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Finding the Fourth Proportional to 209,273.80, 313,910.70 and 146,288.20

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Solution

The fourth proportional to 209,273.80, 313,910.70 and 146,288.20 is: 219,432.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,273.80 : 313,910.70 = 146,288.20 : x
  2. Step 2: Convert to fraction form
    209,273.80/313,910.70 = 146,288.20/x
  3. Step 3: Cross multiply
    209,273.80x = 313,910.70 × 146,288.20
  4. Step 4: Simplify right side
    209,273.80x = 45,921,431,263.74
  5. Step 5: Solve for x
    x = 45,921,431,263.74/209,273.80
  6. Step 6: Final answer
    x = 219,432.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.